The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2014
Filed:
Apr. 12, 2012
Po-sheng Chou, Baoshan Township, TW;
Calvin Yi-ping Chao, Zhubei, TW;
Kuo-yu Chou, Hsinchu, TW;
Honyih Tu, Hsinchu, TW;
Yi-che Chen, Taichung, TW;
Po-Sheng Chou, Baoshan Township, TW;
Calvin Yi-Ping Chao, Zhubei, TW;
Kuo-Yu Chou, Hsinchu, TW;
Honyih Tu, Hsinchu, TW;
Yi-Che Chen, Taichung, TW;
Abstract
A method of reducing column fixed pattern noise including calibrating a readout circuit, wherein the readout circuit is electrically connected to at least one programmable gain amplifier and an analog-to-digital converter. Calibrating the readout circuit includes electrically disconnecting the readout circuit from a pixel output and electrically connecting a pixel reset input of the readout circuit to a pixel output signal input of the readout circuit. Calibrating the readout circuit further includes comparing a measured output of the readout circuit to a predetermined value and storing the comparison result in a non-transitory computer readable medium. The method further includes operating the readout circuit, the operating the readout circuit includes receiving a pixel sample signal and outputting a calibrated output based on an operating output and the stored comparison result.